242 M. A. Stecker on anew Genus of Arachnida. 



and Gihocellince) essentially differing from each other, 

 most important distinctive characters are : — 



The 



Family A. 

 ( Cyphophthalinince.~) 



Body ovate, convex above, flat 

 beneath, entirely covered with a 

 granulated chitinous shield. 



First pair of maxillary palpi 

 6-jointed, filiform, each in union 

 at the point of insertion with a 

 pyramidal body (maxillary pyra- 

 mid). 



The coxse of the second pair of 

 maxillary palpi and of the three 

 pairs of legs completely coalesced 

 with the pectoral pieces. 



Two eyes, placed upon obliquely 

 ascending conical tubercles. 

 One pair of stigmata. 

 Spinning-glands not present (?). 



Species : Cyphophthalmus dtiri- 

 corins, Jos., C. corsicus, Sim., C. 

 cimiciformis, Cambr.*, Stylocellus 

 mmatranus, Westw.f 



Family B. 

 (^Gihocellince.) 



Body elongate-ovate, moderately 

 convex above and beneath, not 

 coriaceous. 



First pair of maxillary palpi fili- 

 form, 5-jointed, without (?) maxil- 

 lary pyramids. 



All the hypopodia meeting in 

 the middle line of the body. 



The coxse of the second pair of 

 maxillary palpi and of the three 

 pairs of legs firmly soldered to the 

 pectoral pieces, but yet indicated 

 in their contours by a deep furrow. 



Four eyes, placed in the same 

 way upon conical tubercles. 



Two pairs of stigmata. 



Spinning-glands at the com- 

 mencement of the abdomen. 



Species : Gihocellum sudeticum, 

 mihi. 



For the new genus, which I name GihoceUum (a synonym 

 of Cyphoplithalmus) ^ from its having its eyes upon conical 

 tubercles, I establish the following diagnosis : — 



GiBOCELLUM, gen. nov. 



Cephalothorax triangularis, supra convexus umbone semicirculari 

 insignis, qui ex apice retro posito paulatim ortus et antrorsum 

 divergeus intra gibbos oculigeroa in inferiorem thoracis superficiem 

 transit. Hypopodia omnia parum convexa, coxis inconcusse ad- 

 haerentibus, anticorum pedum oblonga, angustissima, alteroriim 

 clavata, tertiorum prope pernaeformia, posticorum maxima, in- 

 crassata, cyathiformia. Stigmata quatuor in angulis secundi et 

 tertii arcus abdominalis lateralibus conspicua. Glandulse araneariae 

 ad basin abdominis apparent. 



The specific name I derive from the locality of the new 

 Arachnid (the Riesengebirge, a part of the Sudetes), and 

 give the following diagniosis of it : — 



* Ann. & Mag. Nat. Hist. 1875, sen 4, vol. xvi, pp. 383-389. 

 t Thesaurus Entom. Oxon. 1874, p. 200. 



