CANAEIAN COLEOPTERA. 537 



stones and shingle at the edges of the small streams at intermediate 

 elevations, particularly within the sylvan districts. In such situations 

 I have taken it in Grand Canary, Teneriffe, and Palma ; and in Go- 

 mera it was found by Dr. Crotch. My Teneriffan examples are from 

 the AgTia Garcia (where it aboimds), Las Mercedes, La Esperanza, 

 and Ycod el Alto. It is slightly blacker than the ohUquepunctata, 

 and relatively a little broader (both its head and elytra being appre- 

 ciably more developed) ; its antennae also are distinctly darker ; and 

 its elytra are not quite so flattened, and (although sometimes very 

 obscurely impressed) free from the few rounded punctiform foveae 

 which are placed obliquely across either disc in that species. Its 

 pubescence likewise is a shade darker, or less fulvescent. 



807. Homalota gregaria. 



H^.subparallela, depressa, nigra, subopaca, minute fulvescenti-cinereo- 

 pubescens ; capite rotundato ; prothorace subquadrato, basi rotun- 

 dato et fovea media impresso ; elytris postice gradatim lurido-tes- 

 taceis ; antennis brunneis ; pedibus infuscato-testaceis, femoribus 

 picescentibus. 



Variat (rarius) elytris omnino concoloribus. — Long. corp. Hn. li- 

 vix If. 



Homalota gTegaria, Erich., Gen. et Spec. Stapli. 87 (1839). 

 Tacliyusa immuuita, Id., Gen, et Spec. Stap>h. 916 (1839). 

 Homalota gregaria, Woll, Ins. Mad. 550 (1854). 

 , Id., Cat. Mad. Col. 174 (1857). 



Habitat in inferioribus intennediisque Lanzarotse, Fuerteventurae, 

 Canaries, Teneriffae et Gomerge, inter lapillos per margines rivulorum 

 hinc inde abundans. 



The H. gregaria, so widely spread over Europe, and which occurs 

 in the Madeiran Group, is probably universal at the Canaries — though 

 hitherto I have myself detected it only in Lanzarote, Euertcventura, 

 Grand Canary, and Teneriffe (in the first of which it was taken like- 

 wise by Mr. Gray). It was, however, captured by Dr. Crotch in 

 Gomera. It is more particularly abundant at low and intermediate 

 elevations, residing at the edges of the smaU streams. It may be 

 known by its rather parallel outline and depressed, subopake surface, 

 by the small fovea at the base of its posteriorly-rounded prothorax, 

 by its elytra being gradually of a more or less lurid-testaceous hue 

 behind, by its brown and somewhat robust antennsD, and by the 

 femora of its pallid legs being more or less infuscated. 



808. Homalota amnigena, n. sp. 



H. depressa, fusco-nigra, subopaca, dense pubescens ; capite rotun- 

 dato-ovali ; prothorace subquadrato, leviter canaliculate, canalicida 



