the Species of Rhysodes. 667 



Sp. 7. Rhys. Guildingii, Newman. (Corp. long. .3 unc. lat. .05 unc.) 



Clinidium Guildingii, Kirby ; 'Zool. Journ.' vol. v. p. 6. Icon. 

 tab. 2 Jig. I. 



Colour varying from a pitchy black to a bright ferruginous : head longer 

 than broad, but not triangular ; the vertical portion is divided by a deep 

 broad longitudinal furrow, which divides anteriorly, and passing the base of 

 each antenna, terminates in the region of the clypeus, enclosing a glabrous 

 elongate diamond-shaped space ; behind each antenna a branch of this fur- 

 row goes off to the lateral margin of the head ; the posterior angles of the 

 head are slightly rounded ; the vertical surface consists of two raised oblong 

 glabrous spaces; the sides of the head are but slightly produced, and each 

 presents a perfectly glabrous oblong space, in which no trace of an eye has 

 yet been discovered : the prothorax is oblong, the anterior margin narrower 

 than the posterior, and both truncate, the sides are decidedly convex, and 

 are furnished with a. distinct ridge ; a deep longitudinal furrow extends 

 throughout the dorsal surface, and is slightly dilated in the middle; in each 

 of the posterior angles is a fovea, (originating in the extreme posterior mar- 

 gin), which becomes sulciform as it extends forwards, and terminates in an 

 acute point at nearly half the entire length of the prothorax : the elytra in 

 the region of the scutellum are depressed ; each elytron has five furrows, three 

 dorsal and two lateral, all indistinctly punctured ; the sutural portion of 

 each elytron slopes towards the suture ; the first ridge or interstice ceases 

 considerably before the apex of the elytron, the second and third are more 

 elongated, and unite in a point, the fourth extends round the other three to 

 the suture, enclosing a large deep sutural fovea : the protibice have the same 

 characters as in Rhys, sculptilis, except that the ante-apical tooth does not 

 curve forwards. 



Inhabits the Island of St. Vincent, where it was captured 

 by the late Rev. Lansdowne Guilding, in decayed wood. — 

 The original specimen is in the cabinet of the Entomological 

 Society of London ; there are others in that of the Rev. F. W. 

 Hope, to whom I am indebted for the opportunity of describ- 

 ing the species. 



Sp. 8. Rhys, monilis, Newman. 



Ips monilis, Olivier; Tom. ii. No. 18. p. 4. Icon. No. 18. tab. 1. 

 fig. 6. a b. 



This insect is described as being rather more than 3 lines in length and 

 £ a line in breadth. The antenna are moniliform and of the same length 

 as the prothorax ; the head is large and uneven, the prothorax furnished 

 with a marginal ridge, and dorsally impressed with four longitudinal fur- 

 rows, of which the two interior are short and near together : each elytron 

 has six striae, disposed in pairs. 



Inhabits Senegal, and was presented to Olivier by M. Geof- 

 froy de Villeneuve. 



The number of species of this genus will probably be much 

 increased by subsequent researches of entomologists. They 

 are usually considered to be referrible to the Rhysodes exara- 

 tus of Dalman, and as such have not received the careful in- 

 vestigation which they deserve. It is as well to say that all 

 the descriptions of species are from the insects themselves, 

 and have no reference to previous descriptions, uuless so ex- 

 pressed. 



Vol. II.— No. 24. n. s. 3 x 



