30 CANARTAN COLF.OPTERA. 



48. Pristonychus picescens, n. sp. 

 P. angustulus, piceus, depressus ; capite prothoraeeque nitidis, hoc 

 elongato-subquadrato posticc paiilo angustiore, ad latera late re- 

 flexo, basi (prcesertim versus angulos posticos) sat profunde punc- 

 tato; elytris complanatis, alutaceis, subopacis, pimetatulo-sti-iatis ; 

 antennis pedibiisque elongatis, hiote nifo-piccis ; tibiis (certe in foe- 

 mina, forsan in utroque soxu) rectis ; ungiiieulis fere simplicibus. 

 — Long. Corp. lin. 6. 



Habitat in ins. Hierro ; mense Febniario a.d. 1858 specimen uni- 

 cum (sc. foemineum) inveni. 



The only example which I have seen of this fine Pvistonyclms was 

 captured by myself, beneath a stone, in the district of El Golfo, on 

 the western side of Hierro, during our visit to that island in February 

 1858. It is narrower, flatter, and more piceous than the P. coinpla- 

 natus ; its prothorax is relativclj- longer and more narrowed behind, 

 more margined and recurved at the sides, and more punctured at 

 the base ; its elytra are more coarsely alutaceous and depressed ; and 

 its limbs are considerably paler and longer. Its claws, also, are 

 nearly simple (appearing indeed quite so when viewed from above), 

 — there being only the faintest trace possible of basal crenulations 

 when seen from beneath. 



Genus 21. CALATHUS. 



Bonelli, Observat. JEnt. i. tab. sya, (1809). 



Having taken some pains, in 1862, to monograph the Calathi of 

 these islands, I must refer to my paper (which was published in the 

 * Ann. of Nat. Hist.' for Maj^ of that year) for the diagnoses of the 

 several species ; but since the diagnostic observations which it wiU be 

 desirable here to add can scarcely be compressed into a smaller space 

 than that which I there devoted to them, I think perhaps that I shall 

 hardly do better than extract them almost verbatim. One addition, 

 however, (the C. eognatus) has subsequently been made, — the result 

 of Dr. Crotch's indefatigable researches, during the spring of 1862, 

 in Gomera. 



§ I. Tibial in utroque se.vu (omnino vel fere) simpKces. 



a. Corpus magnum, protliorace postice plus 7nimis angustiore, punctis 

 elytrorum discalibus obsoletis. 



49. Calathus sphodroides. 



Calathus spliodroides, Wall., loc. cit. 342 (1862). 

 Habitat in sylvaticis editioribus TenerifFa;, rarissimus. 

 The present species and the following one are remarkable amongst 



