HYPNOIDUS.— AEEHAPHES. 413 



the disc before the apex, testaceous ; the male has a small densely punctured fovea in 

 the middle of the prosternum. From H. pectoralis, var. inops (Lee), specimens of 

 which are sometimes similarly coloured, the present insect seems to differ in the less 

 distinct punctuation of the thorax, the more shining surface, and the more convex 

 shape. The punctuation of the metasternum is sparser than in //. quadrisignatus. 

 We are indebted to M. Fleutiaux for the loan of his type, which was found in Paris 

 in imported Mexican tobacco. 



9. Hypnoidus pectoralis. 



E later pectoralis, Say, Trans. Am. Phil. Soc. vi. p. 173 (1836) l ; Complete Writings, ii. p. 608 \ 

 Cryptohypnus pectoralis, Lee. Trans. Am. Phil. Soc. new ser. x. p. 488 3 ; Cand. Monogr. Elat. iii. 



p. 89 4 ; Horn, Trans. Am. Ent. Soc. xviii. p. 27 \ 

 Hypnoidus pectoralis, Horn, Ent. News, v. p. 7 6 . 



Cryptohypnus futilis, Lee. Trans. Am. Phil. Soc. new ser. x. p. 488 7 ; Cand. Monogr. Elat. iii. p. 91 8 . 

 Cryptohypnus inops, Lee. loc. eit. p. 488 9 ; Cand. loc. cit. p. 91 10 . 



Hob. North America 1_4 , Massachusetts to California 5 7_1 °, Arizona 5 , and Texas 5 . 

 — Mexico, Northern Sonora {Morrison). 



The Sonoran specimens belong to the ' subvariety ' of the variety futilis, Lee, 

 described by Horn 5 . 



ARRHAPHES. 



Arhaphes, Candeze, Monogr. Elat. iii. p. 98 (1860). 



Arrhaphes, Candeze, Cat. Method. Elat. p. 120 (1891). 



Phorotarsus, Motsehulsky, Bull. Mosc. 1861, 1, p. 120. 



Hemirrhaphes, Candeze, Compt. Rend. Soc. Ent. Belg. xxi. p. cxli (1878). 



This genus contains nine described species, all from the warmer parts of the Old 

 World — Ceylon, India, Burmah, Java, and Sumatra each furnishing one or more repre- 

 sentatives ; and to these must now be added one from Central America. Dr. Candeze 

 states that the tarsi are simple in Arrhaphes; but in his typical species, A. diptychus, 

 from Ceylon, the types of which are before me, the third and fourth joints, as noted 

 by Motsehulsky and as in the American species here described, are narrowly lamellate. 

 The- obliteration of the prosternal sutures is even more complete in A. americanus 

 than in A. diptychus, as in the latter they are indicated anteriorly by a faint carina, of 

 which there is no trace in A. americanus. 



1. Arrhaphes americanus. (Tab. XVIII. figg. 22; 22a, maxillary palpus; 



22 b, anterior tarsus.) 



Moderately elongate, convex, shining, finely pubescent ; testaceous, the prothorax usually with a more or less 

 distinct median vitta — sometimes extending to the greater part of the disc— fuscous or piceous ; the 

 elytra with a large, triangular scutellar patch— in some specimens extending to the humeri and in others 

 almost obliterated — and a transverse median fascia— sometimes extending forwards along the suture and 

 joining the scutellar patch, and sometimes reduced to a spot on the middle of the disc, — piceous or black ; 



