398 Mr. J. Walton on the genus Apion. 



the collection of Mr. Waterhouse ; he has no distinct recollection 

 where he found it. 



64. A. Waltoni, Steph., Cui't. MSS., Schonh. in Litt. 

 — Curtisii, Schonh. 



This insect approaches very closely to the preceding, hut differs 

 chiefly in having the vertex of the head adjacent to the thorax 

 thickly punctulated, the punctures frequently confluent, the frons 

 minutely punctured, the punctures arranged in rows, sometimes 

 confluent, rarely rugulose-punctate, and in having one fine im- 

 punctate stria in the centre, occasionally indistinct; the hasal 

 joints of the antennse black or inchning to piceous, the clava 

 ovate] the thorax subcylindrical, slightly rounded at the sides 

 and rather convex above, with a short dorsal line or a large punc- 

 ture at the base ; the legs distinctly shorter. 



Professor C. H. Boheman, in the celebrated work of Schon- 

 herr, has described a species under the name of Ap. Curtisii of 

 Stephens, taken from specimens forwarded by Mr. Waterhouse, 

 and returned to him ; these have been placed in my hands for 

 examination, and it is very much to be regretted that they are 

 not the true Ap. Curtisii of Kirby^s MSS., but are undoubtedly 

 the species described by Mr. Stephens under the name of Ap. 

 Waltoni. I sent specimens of this insect to M. Schdnherr named 

 Ap. pavidum of Germar, citing Ap. Curtisii of Stephens nee 

 Kirby as a synonym, which elicited the following observation : 

 '' Ap. Waltoni J Schh., nova spec, forte — Apioni plumheo proximum 

 — non pavidum. Germ, (vix Curtisii, v. p. 430. n. 163, mihi non ad 

 manum.^^) I likewise sent specimens to Dr. Germar ; his opinion 

 of them is as follows : '^ Ap. Waltoni, Steph., a new species for 

 my collection. ^^ 



I found this insect rather plentifully on the chalky downs near 

 Brighton in the autumn. Taken by Mr. S. Stevens near Brighton, 

 Arundel, Buiy-hill and Dorking, from June to October ; it ap- 

 pears to be confined to a chalky soil. 



65. A. vorax, Herbst, Kirb., Gyll., Germ., Steph., Schonh. 

 Cure, villosulus $ , Marsh. 



fuscicornis ^ , Marsh. 



A. pavidum, Mn^. Steph. 



The male differs from the female in being more pubescent, and 

 in having the rostrum shorter, filiform, and covered with hairs ; 

 the antennse and their articulations longer and distinctly stouter, 

 the four or five basal joints rufous ; the mesostethium armed 

 where it terminates between the posterior coxae with an acute 

 tooth ; the anterior tibise longer, compressed internally and ex- 

 ternally at the base, and in front and behind at the middle ; and 

 the basal joint of all the tarsi longer. 



