Hypocera. 161 



6. Hypocera Lioy. 



Species of medium to relatively large size. Frons generally not 

 broad, about as broad as liigh, rarely broader to being of considerable 

 breadth ; in several species it has at vertex an elevated knob of various 

 shape, bearing the ocelli of which there are in this case only two, at 

 all events in incrassata and carinifrons, the only Danish species with 

 a frontal knob;^ in coronata and ocellata (non-Danish) the vertex is 

 behind the ocellar triangle produced vertically upwards in the male, 

 but only slightly in the female; the bristles are somewhat various 

 in arrangement, but in the European species there are almost always 

 three rows with four bristles in each; the rows may be straight and a 

 pair of supraantennal bristles present, but often the rows are very 

 convex, and there are generally no supraantennal bristles; in a single 

 case (vitripennis) there are two pairs of supraantennal bristles and at 

 the same time the middle bristles of the anterior row are wanting; 

 the supraantennal bristles, when present, directed backwards. Eyes 

 hairy. Antennæ as a rule inserted much below the middle, near the 

 oral margin, they are generally small, but sometimes the third joint 

 in the male enlarged, more or less lemon-shaped; arista dorsal, in 

 mtripennis rather subapical, pubescent or nearly nude. Palpi larger 

 or smaller, bristles ordinary or small, and sometimes longer in the 

 female than in the male. Clypeus somewhat protruding, more in the 

 female than in the male, and sometimes very large in the female; 

 proboscis sometimes larger in the female than in the male. The 

 maxillæ are, according to Schmitz (Zool. Mededeel. 'sRijks Mus. 

 Leiden, II, 1915, 8 and Tijdschr. v. Entom. 59, 1916, LVIII), as in 

 DohrnipJiora more developed than usual, a palpiger and a rudimentary 

 lacinia being developed. Schmitz has also in an African species, taken 

 on a putrid Unio^ found a similar sense-organ on the palpus as men- 

 tioned above under Paraspiniphora^ likewise in species seeking putrid 

 snails. Jowls very small and generally not descending below the eyes; 

 one long lower postocular bristle; mordellaria has some small oral 



1 Schmitz says (Entom. Ber. Nederl. Ent. Ver. VI, 192'2, 37) about the new 

 species H. cephalotes, which has a frontal knob, that it wants the anterior 

 ocellus in contradistinction to the other species of Hypocera; in carinifrons, 

 however, it is beyond doubt that only two ocelli are present; in incrassata, on 

 the other hånd, the anterior vertical wall of the frontal knob is pale coloured 

 and may perhaps be interpreted as the transformed anterior ocellus, and Pater 

 Schmitz has kindly communicated to me that the case is the same in Bernuthi. 



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