REV. JOHN WHITE AND LINNAEUS. lb 



take some notice, in their regular order, of the several articles 

 mentioned in both your letters. 



Of two specimens of the Lepadogaster which I sent to 

 England, one is lost, the other remains in my possession, and 

 shall certainly be forwarded to you the first opportunity. 



Sphex maculis quatuor dorsalibus, &c, which you say you 

 had not seen before, seems to be Vespa crabroni congener 

 Rail. Indeed I at first supposed it to be Sphex bidens, Syst. 

 Nat., from which I think it differs nothing, except that it has 

 no spines on the thorax. That which has yellow antennae and 

 only two spots on the abdomen is the male, the other female. 

 I find no less than six varieties, which are probably the male, 

 female, and neuter of two distinct species. In some the 

 aculeus, or sting, is tricuspid, in others simple. 



Sphex alis erosis, ferrugineis, apice nigris, was by me sup- 

 posed to be Sphex mauritanica ; but you will judge better on 

 farther examination. I have two species of Mutilla ; the 

 largest inhabits the sandy parts of the isthmus, the other the 

 high parts of the rocky mountain. I could not discover any 

 particulars of their oeconomy. The Chrysis which you remark 

 is inserted in Mr. Forster's ' Nova Insectorum Centura ' as a 

 new insect; he calls it C. cyanura, and another C. cyanochrysa. 

 All my Grylli turriti have ensiform antennae. I have not yet 

 remarked their sexual differences. Tabanus, forma muscae, 

 novus : be pleased to favour me with a specific distinction of 

 this insect. 



I took much pains last summer to discover the metamor- 

 phosis of Panorpa coa, but with little success. It inhabits 

 sandy soils always, and its first appearance for three several 

 summers was precisely on the 18th of May. 



I believe both Sphex fissipes and clavipes were among the 

 rest; perhaps they were lost by sticking close to other subjects. 



If Cancer lateribus 3-spinosis be a new species, let me beg 

 your specific title to that also. 



The insect which you say is Lucanus parallelepipedus, Mr. 

 Forster has also put among his new insects, by the name of 

 Tenebrio b uparius . 



The only specimen that I have of Pratincola Trachelia is in 



