io8 



SCIENCE- GOSSIP. 



Wood. Straw. Leaves. 



Cribraria violacea, Rex. 



Dictydium umbilicatum, Schrad. 



Licea flexuosa, Pers. 



Tubulina fragiformis, Per.s. . 



Dictydiaethalium plumbeum, Rost 



Enteridium olivaceum, Ehrenb. 



Reticularia lycoperdon, Bull. 



Trichia affinis, De Bary 



T. persimilis, Karst. 



T. scabra, Rost. 



T. varia, Pers. 



T. contorta, Rost. . 



T. fallax, Pers. . 



T. botrytis, Pers. . 



Oligonema nitens, Rost. 



Hemitrichia rubiformis, Lister 



H. clavata, Rost. . 



Arcyria ferruginea, Sauter . 



A. albida, Pers. 



var. pomiformis . 

 A. punicea, Pers. . 

 A. incarnata, Pers. 

 A. flava, Pers. 



Perichaena depressa, Libert. . 

 P. populina, Fries, 

 ■p. variabilis, Rost. 

 Margarita metallica, Lister . 

 Dianema harveyi, Rex. . 

 D. depressum, Lister 

 Prototrichia flagellifera, Rost. 

 Lycogala flavo-fuscum, Rost. 

 L. miniatum, Pers. 



{To he continued.') 



AN INTRODUCTION TO 

 BRITISH SPIDERS. 



By Frank Percy Smith. 



(Continued from page 76.) 

 GENUS GONGYLIDIUM (continued). 



Gongylidium agreste BI. [Neriene agrestis 

 in " Spiders of Dorset," p. 486.) 



Length. Male 2.5 mm. 



May be distinguished from G. fusctim by the 

 clypeus being narrower, in the present species it 

 being lower than the ocular area. Apparently a rare 

 and local species. 



Grongylidium retusum Westr. {Ncriene 

 retnsa in " Spiders of Dorset.") 



Length. Male 2 mm., female 2-25 mm. 



This species may be easily distinguished by the 

 form of the caput, which rises gradually from back to 

 front and drops suddenly to its normal level just 

 behind the eyes. A rare spider. 



Gongylidium apicatum Bl. [Neriene api- 

 cata in " Spiders of Dorset.") ■, 



Length. Male 2.1 mm., female 2.3 mm. 



Very like G. retusum, but may be distinguishedi. 

 by the presence of a small conical eminence, sur- 

 mounted by a tuft of hairs, situated immediately 

 behind the ocular area. A very rare species. 



Gongylidium gibbosum Bl. {Neriene gib- 

 bosa in " Spiders of Dorset.") 



Length. Male 2.1 mm., female 2.3 mm. 



This species may be easily distinguished by the 

 form of the cephalo-thorax. At its central part is a 

 very prominent protuberance, in front of which is a 

 deep depression covered with strong hairs. A rare 

 spider. 



Gongylidium tuberosum Bl. {Neriene tube- 

 rosa in " Spiders of Dorset.") 



Length. Male 2. i mm. 



Very similar to G. gibbosui/i, but the protuberance- 

 is not so pronounced, and there is no depression as in 

 that species. 



Gongylidium dentatuni Wid. {Neriene 

 dentata in " Spiders of Dorset.") 



Length. Male 2.5 mm., female 2.7 mm. 



The caput is somewhat raised, the most elevated- 

 portion bearing a number of strong hairs. The falces 

 are each furnished with a very prominent tooth in 

 front. The palpal organs are large and complex. I 

 have taken this species in large numbers, during the 

 early spring, upon the rushes bordering the ornamental 

 waters of Wanstead Park, Essex. 



Gongylidium gibbum. Cb. 



Length of female 3 mm. Male unknown. 



Cephalo-thorax yellowish-brown with blackish- 

 brown converging lines. Caput with a low conical 

 protuberance. Legs pale orange-red, femora darker. 

 Abdomen black. An extremely rare species taken 

 in Scotland. 



GENUS SUSARION CB. 



Tarsi much shorter than metatarsi. Spine on' 

 tibia IV. long and slender. Clypeus narrower than 

 ocular area. Anterior row of eyes recurved. Posterior 

 row procurved. Lateral eyes somewhat separated. 

 Tibial, with a double row of bristly hairs on the 

 underside. 



Susarion neglectum. Cb. 

 llength of female 2. i mm. Male unknown. 

 Cephalo-thOrax dull orange. Lpgs bright orange- 

 yellow. A single specimen has been found in Dorset. 



GENUS MASO SIM. 



Legs of first and second pairs with two rows of 

 fairly strong spines beneath the tibiae and metatarsi. 



Maso sundevallii V/estr. {Neriene sunde- 

 vallii in " Spiders of Dorset.") 



Length. Male 2 mm,, female 2.2 mm. 



Cephalo-thorax yellowish-brown, darker towards- 

 the caput. Legs dull reddish, or yellowish-brown.-. 

 Abdomen almost or quite black. 



